Eagerly finalize V8AbstractEventListeners.

Source/bindings/core/v8/V8AbstractEventListener.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 94 matching lines @@
 
     void clearListenerObject()
     {
         m_listener.clear();
     }
 
     bool belongsToTheCurrentWorld() const final;
     v8::Isolate* isolate() const { return m_isolate; }
     DOMWrapperWorld& world() const { return *m_world; }
 
+    // Oilpan: promptly clear listener wrapper.
+    EAGERLY_FINALIZE();
+#if ENABLE(OILPAN)
+    DECLARE_EAGER_FINALIZATION_OPERATOR_NEW();
+#endif
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         EventListener::trace(visitor);
     }
 
 protected:
     V8AbstractEventListener(bool isAttribute, DOMWrapperWorld&, v8::Isolate*);
 
     virtual void prepareListenerObject(ExecutionContext*) { }
 
@@ skipping 21 matching lines @@
     // Indicates if this is an HTML type listener.
     bool m_isAttribute;
 
     RefPtr<DOMWrapperWorld> m_world;
     v8::Isolate* m_isolate;
 };
 
 } // namespace blink
 
 #endif // V8AbstractEventListener_h